package com.sky.handler;

import com.sky.constant.MessageConstant;
import com.sky.exception.BaseException;
import com.sky.result.Result;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import javax.el.ELException;
import java.sql.SQLIntegrityConstraintViolationException;

/**
 * @Author BUPT-Dingchang
 * @Create 2024/3/1 16:59
 * ClassName: GlobalExceptionHandler
 * Description: 全局异常处理器，处理项目中抛出的业务异常
 */

@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

    /**
     * 捕获业务异常
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result exceptionHandler(BaseException ex){

        log.error("异常信息：{}", ex.getMessage());
        return Result.error(ex.getMessage());

    }


    @ExceptionHandler
    public Result exceptionHandler(SQLIntegrityConstraintViolationException ex){
        // 数据库唯一约束异常  --- Duplicate entry 'zhangsan' for key 'employee.idx_username'
        String message = ex.getMessage();

        if(message.contains("Duplicate entry")){
            // 以空格分割
            String[] split = message.split("'");
            //  zhangsan
            String username = split[2];
            String msg = username + MessageConstant.ALREADY_EXISTS;
            return Result.error(msg);

        } else {
            return Result.error(MessageConstant.UNKNOWN_ERROR);
        }

    }
}
